diff --git a/mybatis-plus-generator/src/main/java/com/baomidou/mybatisplus/generator/config/converts/OracleTypeConvert.java b/mybatis-plus-generator/src/main/java/com/baomidou/mybatisplus/generator/config/converts/OracleTypeConvert.java
index 313735c51026dcf779feb1b9a5abf4ca83aeb5f5..3e720647f2d81fd5a49f51bd46c599288907fc74 100644
--- a/mybatis-plus-generator/src/main/java/com/baomidou/mybatisplus/generator/config/converts/OracleTypeConvert.java
+++ b/mybatis-plus-generator/src/main/java/com/baomidou/mybatisplus/generator/config/converts/OracleTypeConvert.java
@@ -45,7 +45,7 @@ public class OracleTypeConvert implements ITypeConvert {
         } else if (t.contains("number")) {
             if (t.matches("number\\(+\\d\\)")) {
                 return DbColumnType.INTEGER;
-            } else if (t.matches("number\\(+\\d{2}+\\)")) {
+            } else if (t.matches("number\\(+1[0-8]{1}+\\)")) {
                 return DbColumnType.LONG;
             }
             return DbColumnType.BIG_DECIMAL;